Finding the Fourth Proportional to 112,945.06, 155,861.38 and 64,543.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,945.06 : 155,861.38 = 64,543.92 : x
2. Step 2: Convert to fraction form
   112,945.06/155,861.38 = 64,543.92/x
3. Step 3: Cross multiply
   112,945.06x = 155,861.38 × 64,543.92
4. Step 4: Simplify right side
   112,945.06x = 10,059,904,441.81
5. Step 5: Solve for x
   x = 10,059,904,441.81/112,945.06
6. Step 6: Final answer
   x = 89,069.01